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LLVM backend for 6502
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3e61ccdded
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Tim Northover 3e61ccdded CodeGen: extend f16 conversions to permit types > float. 
This makes the two intrinsics @llvm.convert.from.f16 and
@llvm.convert.to.f16 accept types other than simple "float". This is
only strictly needed for the truncate operation, since otherwise
double rounding occurs and there's no way to represent the strict IEEE
conversion. However, for symmetry we allow larger types in the extend
too.

During legalization, we can expand an "fp16_to_double" operation into
two extends for convenience, but abort when the truncate isn't legal. A new
libcall is probably needed here.

Even after this commit, various target tweaks are needed to actually use the
extended intrinsics. I've put these into separate commits for clarity, so there
are no actual tests of f64 conversion here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213248 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-17 10:51:23 +00:00
autoconf Track clang r213171 2014-07-16 16:50:34 +00:00
bindings [OCaml] Documentation improvements. 2014-07-02 22:17:20 +00:00
cmake CMake: avoid a reconfigure loop from r213091 2014-07-15 22:11:54 +00:00
docs CodeGen: extend f16 conversions to permit types > float. 2014-07-17 10:51:23 +00:00
examples [CMake] Update libdeps. 2014-07-14 05:01:53 +00:00
include CodeGen: extend f16 conversions to permit types > float. 2014-07-17 10:51:23 +00:00
lib CodeGen: extend f16 conversions to permit types > float. 2014-07-17 10:51:23 +00:00
projects
test CodeGen: extend f16 conversions to permit types > float. 2014-07-17 10:51:23 +00:00
tools Add the "-x" flag to llvm-nm for Mach-O files that prints the fields of a symbol in hex. 2014-07-16 17:38:26 +00:00
unittests unittests: Actually test reverse iterators in Path tests 2014-07-16 08:18:58 +00:00
utils [lit] Add --show-unsupported flag to LIT 2014-07-17 05:53:00 +00:00
.arcconfig Updated phabricator server. 2014-04-07 03:57:04 +00:00
.clang-format
.gitignore Add Polly to the ignored trees. 2014-06-25 13:13:36 +00:00
CMakeLists.txt [CMake] Introduce LLVM_SHLIB_OUTPUT_INTDIR. 2014-07-04 04:23:26 +00:00
CODE_OWNERS.TXT ARM Linux support 2014-04-02 23:03:28 +00:00
configure Touch configure to force clang's config.h.in reconfiguration on the build servers 2014-06-06 10:36:38 +00:00
CREDITS.TXT Update Credits. 2014-05-29 19:59:58 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile [configure/make] Propagate names of build host tools when making BuildTools 2014-03-25 21:45:41 +00:00
Makefile.common
Makefile.config.in Track clang r213171 2014-07-16 16:50:34 +00:00
Makefile.rules [Make] Fix dependencies for td.expanded 2014-06-20 19:00:41 +00:00
README.txt Trivial test commit. 2014-04-26 19:05:45 +00:00

README.txt 

Low Level Virtual Machine (LLVM)
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